Calculator



FIG. 1 is a top-down perspective view of a calculator showing my new design;

FIG. 2 is a front side elevation view thereof;

FIG. 3 is a rear side elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom-up perspective view thereof.

The horizontal shading lines on the front surface and the rear surface show a reflective material of the calculator.

The oblique shading lines on the buttons, the margin and the side surfaces show a transparent material of the calculator.

The oblique shading lines on the two screens do not show a transparent material of the calculator. 

CLAIM The ornamental design for a calculator, as shown and described. 